Boosting Interfacial Interaction in Hierarchical Core–Shell Nanostructure for Highly Effective Visible Photocatalytic Performance
| Autor: | Zebao Rui, Lin Gu, Kaihang Ye, Muhammad-Sadeeq Balogun, Fenglian Xian, Xiaozhi Liu, Yongqing Wang, Jiejing Kong, Hongbing Ji |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanostructure business.industry Charge separation 02 engineering and technology Electron 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials General Energy Semiconductor Adsorption Chemical engineering Photocatalysis Physical and Theoretical Chemistry 0210 nano-technology business Core shell nanostructure Recombination |
| Zdroj: | The Journal of Physical Chemistry C. 122:6137-6143 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.8b00040 |
| Popis: | The major challenges faced by photocatalyst include poor visible-light response, low-efficient charge separation, and serious photoexcited electrons recombination. The nature of hybrid photocatalysts interfacial interaction plays a major role in improving these challenges. Here, highly active and stable visible photocatalytic performance of toxic organics mineralization is realized by a TiO2-based hierarchical core–shell nanostructure, TiO2@SrTiO3@Pt@Bi2O3@Pt (denoted as TSPBP). TSPBP simultaneously exhibits the following advantages: (1) the multilayered core–shell structure extends the visible-light response and enhances light harvesting; (2) bridging with Pt at the intermediate enhances the electron interaction between the different semiconductor layers and lowers charge transfer resistance; (3) deposition of Pt nanoparticles at the outmost layer could stabilize photoexcited electrons for suppressing charge recombination and activate the adsorbed oxygen. These beneficial factors lead to the remarkably h... |
| Databáze: | OpenAIRE |
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